Commercial and Industrial HVAC-R Contractor in Dallas

Unrivalled Boiler and Chiller Specialists Keeping DFW Businesses Comfortable

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BIMS: A Legacy of Excellence

BIMS has been dedicated to heating, cooling, and mechanical services since 1980. The company was founded by HVAC contractor Randy Bellomy. He launched the business with just $200, an old truck, and a determination to do things the right way. Working out of his home, Randy built his reputation on a simple promise:

"If it heats or cools, we’ll work on it."

For decades, BIMS provided residential, commercial, and industrial HVAC-R services under that philosophy. Eventually, Randy’s son, Grant Bellomy, recognized that the industry and customer needs were changing. Grant grew up in the business. He spent his childhood around service trucks, tools, and rooftops. As he got older, he began imagining new ways to expand and modernize the company.

In 2018, after purchasing the business from his father, Grant led a major transformation. BIMS shifted its focus toward commercial and industrial HVAC-R—larger, more complex systems that demand advanced technical knowledge. Along with this evolution came a fresh identity:

BIMS—Bellomy Industries & Mechanical Services—a name that better reflects the company’s mechanical expertise and capability to support large-scale, mission-critical facilities.

Today, Grant’s vision is fully realized. BIMS is a trusted, highly specialized mechanical contractor serving the DFW region. Our technicians bring decades of hands-on experience. They hold Texas Air Conditioning Contractors Licenses (TACLs), ensuring every project meets the highest professional and regulatory standards.

From humble beginnings to a respected leader in advanced HVAC-R solutions, BIMS continues to honor its roots. The company embraces innovation—keeping businesses comfortable, productive, and running at their best.

For the best industrial HVAC-R services in Dallas, call BIMS at (214) 467-2653 to schedule a consultation.
An industrial size building could need multiple ac units to keep it cool, Bellomy Industries & Mechanical Services has the capicity for jobs that size.

Dallas’s Favorite Industrial HVAC-R Company

BIMS is proud to offer Dallas, Coppell, and Grapevine a diverse selection of industrial and commercial HVAC-R services. Our team of problem-busting experts is ready to take on projects of any size. We deliver services with quick turnaround times to minimize operational delays. We service:

  • Boilers

    Heating water boilers are used to warm air so industrial and commercial spaces can be heated. Industrial steam boilers are used to create steam for power generation, sterilization, and more. We have extensive experience repairing, replacing, and maintaining both types of boilers across the DFW.

    Get Boiler Care
  • Furnaces

    These heating units typically run on gas or electricity and may use forced-air systems to heat commercial and industrial spaces in the Dallas area. Expect BIMS to know all the tricks in the book to keep your industrial furnace running strong.

    Explore Furnace Service
  • Radiant Heaters

    When a commercial or industrial radiant heating system in DFW needs service, call BIMS. We provide full services for these targeted heating systems that let you warm spaces precisely when and where you want.

    Consider Radiant Heat
  • Warehouse Heaters

    Warehouse heaters can be any one of a variety of systems, from heat pumps to gas furnaces. Their defining characteristic is being able to evenly heat massive spaces. Whether your business needs a warehouse heater upgraded, fixed, or tuned up, BIMS can help.

    Get Warehouse Heater Care
  • Unit Heaters

    Highly versatile, unit heaters can be powered by a gas, hot water, or electrical system. They can also warm spaces both large and small. Whether your unit heater problems are big or little, BIMS has you covered with full-service care.

    Discover Unit Heaters
  • Chillers

    Chillers are the most effective method of cooling industrial or commercial buildings in the DFW area, especially when those spaces need to maintain low humidity. We are authorized distributors of numerous chiller brands and have expertise with even more.

    Keep Things Chilled
  • Cooling Towers

    Commercial and industrial cooling towers help prevent chillers and other large HVAC systems from overheating via water evaporation. At BIMS, we can fulfill all your cooling tower needs, whether that means repairs, maintenance, or installing a new unit.

    Explore Cooling Tower Service
  • Rooftop Units

    These all-in-one cooling (and sometimes heating) systems have condensers, air handlers, and every other component within a single rooftop housing. BIMS can install, repair, and maintain your RTUs. We also provide zoning services.

    Service Your RTU
  • Split Systems

    Industrial split systems are separated into two parts, one indoors (this includes the air handler) and one outdoors (this includes the condenser). For our DFW customers, we offer full-service care for split systems, whether one or both units need attention.

    Care for a Split System
  • Subcoolers

    Your industrial chiller, refrigerator, and AC systems rely on subcoolers to optimize their refrigerant, maximizing energy efficiency and performance. BIMS experts can maintain, repair, or replace your industrial subcoolers.

    Get Subcooler Care
  • Wall-Mounted AC Units

    Industrial wall-mounted ACs are used when prefab structures, telecom shelters, or control rooms need to be cooled without installing ducts. BIMS offers full-service care for these externally mounted, heavy-duty, and weatherproof cooling systems.

    Explore Wall-Mounted Care
  • Electronic Air Cleaners

    Using an electrical charge to draw in particulates, electronic air cleaners trap and hold pollutants like bacteria, dust, and more. BIMS repairs, replaces, and maintains electronic air cleaners throughout the DFW.

    Discover Electronic Air Cleaners
  • Air Sterionizers

    By releasing electrically charged ions, air sterionizers cause microscopic air pollutants to clump together. This can make them easier for filters to capture. BIMS offers comprehensive sterionizer care.

    Sanitize Your Air
  • ULT Freezers

    BIMS is certified to work on ULT freezers designed to store scientific samples sensitive to the most minute temperature change. We offer repair, replacement, and maintenance across the DFW area.

    Get Scientific Refrigeration
  • Lyophilizers

    Lyophilizers (scientific freeze dryers) need to be well cared for to keep freeze-dried materials preserved safely. BIMS offers comprehensive care services for lyophilizers in Dallas, Coppell, and beyond.

    Secure Lyophilizer Service
  • Thermal Storage Systems

    Thermal storage systems are units that let companies in DFW store a reserve of chilled water or ice for when primary cooling systems need support. BIMS helps keep thermal storage systems at peak functionality.

    Explore Thermal Storage
  • Capacity Controls

    We are capacity controls experts in the Dallas area. Keep your refrigeration systems stable and able to keep up with varying load demands via capacity controls services from BIMS.

    Stay in Control
  • Variable Frequency Drives

    Let BIMS care for your Variable Frequency Drives (VFDs). Our technicians ensure your VFDs can effectively minimize strain on your motors and other mechanical systems while also conserving energy.

    Prioritize Your VFDs
  • Common Mode Chokes

    At BIMS, we repair, replace, and maintain common mode chokes in Coppell and beyond. This will help keep your equipment protected from high-frequency currents that can damage and interfere with your systems.

    Protect Your Equipment
  • BAS

    BIMS supports the automation of your facility with Building Automation Systems (BAS) services in Dallas. We offer automation services for energy management systems, lighting, ventilation, and more.

    Automate Comfort
  • Pumps

    BIMS offers industrial pump services in Dallas and Grapevine. We will repair and replace sump pumps, circulation pumps, and booster pumps.

    Keep Pumps Going
  • Compressed Air Systems

    BIMS knows exactly how to care for your compressed air systems. Whether you have a refrigerated air dryer or pneumatic controls, our expertise will keep your Dallas location running smoothly.

    Get Compressed Air Care
  • Ductwork and Exhaust Fans

    BIMS is the go-to company for industrial and commercial ductwork in Dallas. Our team is experienced in ductwork and ventilation of all types, including kitchen exhaust hoods and fans.

    Secure Ventillation Service
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Bellomy Industries & Mechanical Services are the experts you need to install, repair and maintain an Industrial size refrigeration unit.

BIMS Regularly Tackles a Variety of HVAC-R Problems for Our Clients in the DFW Area

  • Malfunctioning energy management systems
  • Overworked rooftop units needing replacement
  • CRAC units failing to manage humidity correctly
  • Leaking circulatory pumps
  • Inconsistently running kitchen exhaust hoods
  • Damaged wine cooler vapor barriers
  • Moisture-compromised compressed air systems
  • Clogged water lines in commercial swamp coolers

BIMS Stands Apart from Other Dallas Industrial HVAC-R Contractors

There are plenty of reasons to choose BIMS. We aren’t a residential HVAC-R company that dabbles with industrial work; we’re the real deal. We travel with fully-stocked trucks, our technicians are factory-trained, and we are licensed and insured. However, that’s not all. You should also choose us for these reasons:


  • A History of Success Through Effort: Companies that have operated for 46 years in the DFW area have a few things in common, such as a superb work ethic, a desire to learn, and a dedication to solving any challenge. BIMS is no exception. Over the years, we have undergone many changes, persevering through tough times while learning new ways to succeed in our highest priority, customer satisfaction. Quality HVAC-R service, transparent pricing, and respect for customers are the non-negotiables at the heart of BIMS.

  • Professional Associations: We are members of several organizations in our field that offer ongoing training and guidance on professional standards. We are members of the National Association of Church Facilities Managers, the Local 146, and the Refrigerating Engineers and Technicians Association. This is proof of our qualifications as Dallas’s best industrial HVAC business.

  • One Company, Many Services: When our focus changed to commercial and industrial HVAC-R services, we went all-in. We currently offer a wide variety of non-residential services in DFW and the surrounding metroplex, including geothermal heat pumps, air purification, pneumatic controls, warehouse heaters, and scientific refrigeration. No need for multiple companies to service multiple systems. If you have a commercial or industrial HVAC need, BIMS has a solution.

  • Preferred Providers: Prominent equipment and system brands depend on us as their preferred service providers. Trane, Carrier, York, and Daikin have officially certified BIMS to install and service chillers in DFW. This means we bring a superior level of knowledge and skill to those systems.
Choose BIMS the next time you need industrial HVAC-R service in DFW. Call us at (214) 467-2653 to schedule a consultation.
It can take multiple rooftop units to keep your building comfortable, but it only takes one BIMS team like to do the job.
Industrial HVAC units operators differently from residential, so make sure you have a commercial and industrial HVAC expert like BIMS doing the job.

Your Chiller and Boiler Experts in Dallas

As we entered the industrial and commercial field, BIMS quickly recognized the clear need for chiller and boiler services in Dallas, Grapevine, and Coppell. Both boilers and chillers are crucial to commercial and industrial services throughout DFW.

So, we perfected our knowledge and skills until we became the foremost experts in DFW. Whether you need your steam boiler replaced or your industrial chiller repaired, BIMS should be your first choice. With our extensive knowledge and experience, we can quickly make your mechanical worries a thing of the past.

Proud to Partner Locally

We serve as a distributor for numerous manufacturers from across the nation, including the local Texas company, Mortex Products, Inc. We are always happy to work with other American companies, but especially those from our very own state. In fact, Mortex supplies a wide range of equipment and components that we use daily. This includes: air handlers, chillers, furnaces, warehouse heaters, coils, and refrigerant lines.

Our partnership with Mortex just shows how far Texas engineering and hard work can go in Dallas and Grapevine.

Visit Our Manufacturers
Mortex, Mortex Products, Inc. business logo.

Learn More About HVAC-R

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The Shift to Eco-Friendly Refrigerants and Its Impact on Costs

The HVAC-R industry is changing quickly, and making a shift to environmentally safe refrigerants. Are you ready for the switch?

Enhancing Indoor Air Quality for Texas Businesses

Indoor air quality is an important part of workplace wellbeing, and may go overlooked. Is the air quality in your business as good as it could be?

DFW Customers Give Us Five Stars

  • Geneive G.

    We (United Site Services) have used Bellomy/BIMS for years now. We call and they are here same day or by the next, during busy season! We will not use anyone else for our AC/heating needs. Thank you guys for everything you do for us! Special thanks to Naomi for handling our issues and always with a smile!

  • Mike

    On time, very professional. Price is very reasonable. They have earned my business for all my company needs. The service is excellent and can't be beat. I have used other companies for my business and none compare to the skill and professionalism of BIMS.

  • Joe S.

    The chiller was having constant issues and shutting off, another company made repairs, but it still was shutting off. We called BIMS out and he found it just needed the coils cleaned and refrigerant adjusted on it. It's been working better and actually staying on now.

  • Stephanie W.

    I am not someone who usually posts reviews. But I can't say enough about Grant Bellamy. He arrived on time, he was courteous, and professional. He made sure that he explained the issues so that a layman like myself could understand. Mr. Grant runs his business with integrity and professionalism you don't see anymore. I will be using his services in the future and I would recommend him and BIMS to anyone.

  • Kevin S.

    We’ve partnered with Grant and his team at BIMS on numerous chiller and refrigeration projects, and they consistently deliver top-notch service. Their team—from ownership to office staff to technicians—is professional, knowledgeable, and incredibly reliable. Every job is handled with care and completed on time. It’s rare to find a company that combines technical expertise with such a strong commitment to customer service. Highly recommend working with them!

  • Towfeq Z.

    They delivered outstanding service for my heating and air conditioning needs. From prompt scheduling to transparent pricing, their professionalism and expertise stood out. The technicians quickly fixed the issue, offering valuable tips for system efficiency. Highly recommended for reliable HVAC services. I would highly recommend them!

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Dedicated Partners

Refrigerating Engineers & Technicians Association - blue and yellow gear logo National Association of Church Facilities Managers blue and green circle logo. Texas Air Conditioning Contractors Association, TACCA, blue logo. IFMA, International Facility Management Association red business logo with a blue sphere. Fort Worth, TX's local chapter 146 for plumber, pipefitters, and welders. The Church Network, Greater Fort Worth Chapter Logo